Energy for tomorrow's world
Energy for tomorrow's world
The first photograph of the earth eclipsing the sun was taken by Apollo 12 astronauts returning from the moon in November 1969. Cover shows the amazing interplay of light seen by the astronauts. The sun, which is itself an enormous thermonuclear reactor, has always provided virtually all the energy used by man, in the form of solar energy stored in fossil fuels, in the flow of rivers and in the plants that provide our food. But fossil fuels, which today meet the bulk of our energy requirements, are non-renewable and the race is on to find replacements for them before thev run out.